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LM386N-1 Datasheet Preview

LM386N-1 Datasheet

Low Voltage Audio Power Amplifier

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LM386
SNAS545C – MAY 2004 – REVISED MAY 2017
LM386 Low Voltage Audio Power Amplifier
1 Features
1 Battery Operation
• Minimum External Parts
• Wide Supply Voltage Range: 4 V–12 V or
5 V–18 V
• Low Quiescent Current Drain: 4 mA
• Voltage Gains from 20 to 200
• Ground-Referenced Input
• Self-Centering Output Quiescent Voltage
• Low Distortion: 0.2% (AV = 20, VS = 6 V, RL = 8 Ω,
PO = 125 mW, f = 1 kHz)
• Available in 8-Pin MSOP Package
2 Applications
• AM-FM Radio Amplifiers
• Portable Tape Player Amplifiers
• Intercoms
• TV Sound Systems
• Line Drivers
• Ultrasonic Drivers
• Small Servo Drivers
• Power Converters
3 Description
The LM386M-1 and LM386MX-1 are power amplifiers
designed for use in low voltage consumer
applications. The gain is internally set to 20 to keep
external part count low, but the addition of an external
resistor and capacitor between pins 1 and 8 will
increase the gain to any value from 20 to 200.
The inputs are ground referenced while the output
automatically biases to one-half the supply voltage.
The quiescent power drain is only 24 mW when
operating from a 6-V supply, making the LM386M-1
and LM386MX-1 ideal for battery operation.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM386N-1
PDIP (8)
9.60 mm × 6.35 mm
LM386N-3
PDIP (8)
9.60 mm × 6.35 mm
LM386N-4
PDIP (8)
9.60 mm × 6.35 mm
LM386M-1
SOIC (8)
4.90 mm × 3.90 mm
LM386MX-1
SOIC (8)
4.90 mm × 3.90 mm
LM386MMX-1
VSSOP (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Schematic
6
VS
15 k
7
BYPASS
2
- INPUT
15 k GAIN
8
GAIN
1
150
1.35 k
15 k
3
+ INPUT
5
VOUT
50 k
50 k
4
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

LM386N-1 Datasheet Preview

LM386N-1 Datasheet

Low Voltage Audio Power Amplifier

No Preview Available !

LM386
SNAS545C – MAY 2004 – REVISED MAY 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 3
6.1 Absolute Maximum Ratings ...................................... 3
6.2 ESD Ratings ............................................................ 3
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 4
6.6 Typical Characteristics .............................................. 5
7 Parameter Measurement Information .................. 6
8 Detailed Description .............................................. 7
8.1 Overview ................................................................... 7
8.2 Functional Block Diagram ......................................... 7
8.3 Feature Description................................................... 7
8.4 Device Functional Modes.......................................... 7
9 Application and Implementation .......................... 8
9.1 Application Information.............................................. 8
9.2 Typical Application ................................................... 8
10 Power Supply Recommendations ..................... 15
11 Layout................................................................... 16
11.1 Layout Guidelines ................................................. 16
11.2 Layout Examples................................................... 16
12 Device and Documentation Support ................. 18
12.1 Device Support...................................................... 18
12.2 Documentation Support ....................................... 18
12.3 Related Links ........................................................ 18
12.4 Receiving Notification of Documentation Updates 18
12.5 Community Resources.......................................... 18
12.6 Trademarks ........................................................... 18
12.7 Electrostatic Discharge Caution ............................ 18
12.8 Glossary ................................................................ 18
13 Mechanical, Packaging, and Orderable
Information ........................................................... 19
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (March 2017) to Revision C
Page
• Changed devices LM386M-1/LM386MX-1 To: LM386 in the data sheet title ........................................................................ 1
• Changed From: LM386N-4 To: Speaker Impedance in the Recommended Operating Conditions table .............................. 4
• Changed From: 5 Ω to 12 Ω To: 5 V to 12 V for Supply Voltage in Table 1 .......................................................................... 8
• Changed kW To: kΩ in the Gain Control section ................................................................................................................... 8
• Changed kW To: kΩ in the Input Biasing section................................................................................................................... 9
• Changed Figure 11................................................................................................................................................................. 9
• Changed From: 5 Ω to 12 Ω To: 5 V to 12 V for Supply Voltage in Table 2 ........................................................................ 10
• Changed Figure 13............................................................................................................................................................... 10
• Changed From: 5 Ω to 12 Ω To: 5 V to 12 V for Supply Voltage in Table 3 ........................................................................ 11
• Changed Figure 15............................................................................................................................................................... 11
• Changed From: 5 Ω to 12 Ω To: 5 V to 12 V for Supply Voltage in Table 4 ........................................................................ 12
• Changed Figure 17............................................................................................................................................................... 12
• Changed From: 5 Ω to 12 Ω To: 5 V to 12 V for Supply Voltage in Table 5 ........................................................................ 13
• Changed From: 5 Ω to 12 Ω To: 5 V to 12 V for Supply Voltage in Table 6 ........................................................................ 14
• Changed Figure 21............................................................................................................................................................... 14
• Changed From: 5 Ω to 12 Ω To: 5 V to 12 V for Supply Voltage in Table 7 ........................................................................ 15
• Changed Figure 23............................................................................................................................................................... 15
Changes from Revision A (May 2004) to Revision B
Page
• Added LM386MX-1 device to the data sheet. ....................................................................................................................... 1
• Added Device Information, Application and Implementation, Power Supply Recommendation, Layout, and Device
and Documentation Support sections..................................................................................................................................... 1
• Inserted Functional Block Diagram......................................................................................................................................... 7
2
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Product Folder Links: LM386
Copyright © 2004–2017, Texas Instruments Incorporated


Part Number LM386N-1
Description Low Voltage Audio Power Amplifier
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